The preparation of ethyl 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-5-methyl-4-oxo-1,8-naphthyridine-3-carboxylate
作者:John S. Kiely
DOI:10.1002/jhet.5570280265
日期:1991.2
Ethyl 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-5-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid has been prepared by a route involving masking of the C2,3 double bond through reduction, followed by regioselective deprotonation of the C5 position and methylation and then regeneration of the C2,3 double bond via selenation, oxidation, and syn-elimination.
乙基7-氯-1-环丙基-6-氟-1,4-二氢-5-甲基-4-氧代-1,8-萘啶-3-羧酸已通过涉及C 2的掩蔽的方法制备通过还原形成3个双键,然后通过C 5位置的区域选择性去质子化和甲基化,然后通过硒化,氧化和同消去再生C 2,3双键。